Fermionic transformation rules for spatially filtered light beams in conical refraction

Loiko, Yu.; Bursukova, Maria A.; Kalkanjiev, Todor K.; Rafailov, Edik U.; Mompart, J.

doi:10.1117/12.874602

Cited by 4 publications

(9 citation statements)

References 4 publications

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“…Additionally, we demonstrate that the intensity distribution between the two refracted beams can be well described with a single angular parameter. When the biaxial crystal is rotated, the intensity distribution between the two refracted beams follows the transformation law recently pointed out by Loiko et al [15] for CR filtered beams, that differs from the well known Malus law for double refraction in uniaxial crystals. To verify the usefulness of the phenomenological transformation rules, we apply them in Section 4 to calculate the resulting intensity pattern for an incident axicon beam and confirm our approach with experimental results.…”

Section: Introductionmentioning

confidence: 97%

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Wave-vector and polarization dependence of conical refraction

Turpin¹,

Loiko²,

Kalkandjiev³

et al. 2013

Opt. Express

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We experimentally address the wave-vector and polarization dependence of the internal conical refraction phenomenon by demonstrating that an input light beam of elliptical transverse profile refracts into two beams after passing along one of the optic axes of a biaxial crystal, i.e. it exhibits double refraction instead of refracting conically. Such double refraction is investigated by the independent rotation of a linear polarizer and a cylindrical lens. Expressions to describe the position and the intensity pattern of the refracted beams are presented and applied to predict the intensity pattern for an axicon beam propagating along the optic axis of a biaxial crystal.

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Section: Introductionmentioning

confidence: 97%

“…Eqs. (2) and (7) describe also recent experimental results on the propagation of CR filtered beams [15] along the optic axis of a BC. In that case, φ χ = φ G , where φ G denotes the orientation of an initial biaxial crystal that produces a CR ring with lateral shift given by vector G 0 .…”

Section: Fig 4 Normalized Intensities Of the Two Refracted Beams Afmentioning

confidence: 99%

Wave-vector and polarization dependence of conical refraction

Turpin¹,

Loiko²,

Kalkandjiev³

et al. 2013

Opt. Express

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“…EBs do not posses continuous cylindrical symmetry, at variance with Gaussian beams typically used in CR experiments. The approach follows the transformation law pointed out by Loiko et al [73] for CR filtered beams, which differs from the well known Malus law for double refraction in uniaxial crystals. CR has been mostly reported for input beams with intensity pattern possessing continuous cylindrical (rotation) symmetry around the propagation axis.…”

Section: Wave-vector and Polarization Description Of Conical Refractionmentioning

confidence: 99%

“…(2.44). CR-filtered beams passing through a BC do not produce full ring pattern, but refract (split) into two orthogonally linearly polarized beams [73]. Their positions correspond to two diagonally opposite points of the otherwise expected CR ring for a Gaussian input beam.…”

Section: Multiple Crystalsmentioning

confidence: 99%

Conical refraction: fundamentals and applications

Turpin

Loiko

Kalkandjiev

et al. 2016

Laser & Photonics Reviews

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A mis padres, hermanos, sobrinos y a Raquel AcknowledgmentsTot té un principi i un final i aquest serà el punt final a una etapa de la meva vida la qual estic segur que d'aquí uns anys, quan miri enrere, veuré que ha estat probablement la que ha tingut una major rellevància tant a nivell personal com científic. Quan vaig acabar la carrera no tenia gaire clar quin camí seguir però vaig tenir la sort de parlar amb qui ha estat el meu director de tesi, el Jordi, qui em va guiar i va posar tota la seva confiança en mi des del primer moment. Em va oferir un tema original i es va aventurar a dirigir una tesi amb una forta vessant experimental, tot un atreviment venint d'un teòric! Quan vaig començar el Màster, si m'haguessin dit on he arribat 5 anys després mai m'ho hauria cregut i, Jordi, tu tens gran part de culpa de tot això. Moltes gràcies per haver confiat en mi des del primer dia, per haver-te mostrat sempre tan orgullós de tot el que he fet, per haver estat sempre disponible i per ajudar-me i animar-me quan he passat moments durs durant aquest anys. M'has ensenyat a ser un bon científic, a moure'm dins aquest món, a creure em mi i a ser una millor persona. Mai t'estaré prou agraït per tot això i per haver sigut tan proper amb els teus cotilleos, converses de futbol, política, noies, etc. dinant al bar. Has estat com un pare per a mi (bueno, un germà gran, que tampoc ets tan vell per a ser Mompare :P). Si el Jordi ha estat el meu pare en la ciència, el Yury ha estat el meu gurú científic. Mai he trobat una persona tan pacient, que sàpiga tant de qualsevol tema i amb tanta dedicació com tu. M'has ensenyat a ser riguròs, a tenir un mètode, la importància de estar al dia de tot el que es fa en el cap d'estudi, a programar, i un llarg etcètera. En resum, m'has ajudat a donar-me forma a mi mateix com a científic i a tenir perseverança en el que faig. Tot això sense oblidar que per a mi ets un gran amic! Seguidament, també he donar les gràcies al Todor, una de les persones més enèrgiques que conec i amb més passió per la ciència. Tu vas iniciar tot el tema de la refracció cònica al nostre grup i has demostrat que ets realment qui més coneix de cristalls i del fenomen en si. Si no hagués estat per tu, no podríem haver començat res d'això i no podríem haver explotat el fenomen ni una quarta part del que hem fet. Ets un exemple per tenir sempre un somriure a la cara i per aquesta iii iv força que et fa tirar endavant tots els teus projectes. També vull donar les gràcies a altres companys del Grup d'Òptica, començant per la Verònica, que va passar de ser una "professora de la carrera" a ser el meu ideal de constància i l'esforç. Ets un exemple professional a més a més d'una persona molt més propera i alegra del que pot semblar a primera vista. A Ramón también le tengo que agradecer su ayuda y su disponibilidad a lo largo de estos años, su paciencia cuando ha tenido que soportar mis imitaciones y su alegría y naturalidad en todo momento. Amb el Francesc també he compartit molts bons moments, sobretot a les diverses activit...

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“…In this paper we propose a novel method to achieve a scalable increase of the FSO channel capacity by applying the phenomenon of conical refraction (CR) [9][10][11][12][13][14][15][16][17]. The method is based on the forward-backward transformation offered by CR.…”

Section: Introductionmentioning

confidence: 99%

Conical refraction multiplexing for free-space optical communications

et al. 2012

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Conical refraction (CR) is proposed to increase the channel capacity for free space optical communication applications. We present the first investigations of cascaded CR with a linearly polarized input beam and experimentally prove that two oppositely oriented consecutive identical biaxial crystals perform a forward-backward transformation of the incident light beam. This forward-backward transformation is reported for different input beams with Gaussian, elliptical and angularly modulated transverse intensity profiles and is the basis for our novel proposal on multiplexing and demultiplexing of optical beams. We present experimental proof of usefulness and perspective of the CR multiplexing technique by increasing in one order of magnitude the channel capacity at optical frequencies. The technique is applicable to any wavelength in optical and telecommunication bands. It can be also properly upgraded with the WDM technique.

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Fermionic transformation rules for spatially filtered light beams in conical refraction

Cited by 4 publications

References 4 publications

Wave-vector and polarization dependence of conical refraction

Wave-vector and polarization dependence of conical refraction

Conical refraction: fundamentals and applications

Conical refraction multiplexing for free-space optical communications

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